Abstract: A device has laterally mobile pressure devices on belt sanders in throughfeed, which are brought into position so that workpieces detected by detectors are sanded in a laterally limited area in the longitudinal direction. An arrangement of such pressure arrangements represents, for example, a segmented sanding pad. The method of lateral movement of its segments and the devices created for this purpose enable, among other things, the sanding of frames in the wood grain direction of their individual parts and/or their center panel as well as the application of sanding patterns to workpiece surfaces.

Abstract: A device is described comprising: a segmented sanding pad having a plurality of segments, each segment having a longitudinal axis and corresponding to a respective contact roller having a longitudinal axis, wherein, when the sanding pad is moved obliquely, the segments align in accordance with a degree of oblique movement, characterized in that the longitudinal axes of the individual contact rollers and the respective segments are aligned with respect to each other when the gap between the segments is adjusted to the longitudinal axis of the contact rollers.

Abstract: When a segmented grinding pad (11, 12, 13) of a continuous belt grinding machine is inclined, the modified position of the row (15) of key elements in relation to the original, for example, right-angled position of the row (11) of segments presents a problem. The aim of the invention is to carry out an approximate comparison of the deviations created by the lateral displacement of the segments S1 . . . Sn by means of a lever device (16) or a servomotor. The full compensation of the deviations of the segments from the longitudinal axis thereof to the key elements can be achieved by a special embodiment of one such device.

Abstract: A belt sanding system comprising a segmented sanding block including a plurality of individually controllable segments and one or more sanding belt deflecting rollers, a plurality of sensing elements corresponding to the plurality of segments, and a device for interconnecting the plurality of sensing elements, interconnecting the plurality of sensing elements with the segmented sanding block, and effecting lateral movement of the plurality of sensing elements as the segmented sanding block is rotated to an oblique alignment relative to the feed direction.

Abstract: A belt sanding system comprising a segmented sanding block including a plurality of individually controllable segments and one or more sanding belt deflecting rollers, a plurality of sensing elements corresponding to the plurality of segments, and a device for interconnecting the plurality of sensing elements, interconnecting the plurality of sensing elements with the segmented sanding block, and effecting lateral movement of the plurality of sensing elements as the segmented sanding block is rotated to an oblique alignment relative to the feed direction.

Abstract: The invention describes devices consisting of a combination of oblique to feed direction aligned belt sanding assemblies, with drives or devices for low sanding belt speeds and/or with conventional, or modified for sanding belt oblique operation, electronic segmented sanding pad. The oblique alignment of the sanding unit can be adjusted steplessly. Its application for both oblique sanding and, when so aligned, sanding directly in the direction of feed meets the requirements of intermediate sanding between paint or varnish coats, as well as those of wood sanding.

Abstract: The invention describes devices consisting of a combination of oblique to feed direction aligned belt sanding assemblies, with drives or devices for low sanding belt speeds and/or with conventional, or modified for sanding belt oblique operation, electronic segmented sanding pad. The oblique alignment of the sanding unit can be adjusted steplessly. Its application for both oblique sanding and, when so aligned, sanding directly in the direction of feed meets the requirements of intermediate sanding between paint or varnish coats, as well as those of wood sanding.

Abstract: The invention relates to a belt grinder of which the supporting tables (13, 14) are arranged in relation to the grinding unit (11) and hence the grinding belt (12) in such a way that tables need not be adjusted at the same time as the grinding unit is pivoted, while nevertheless the gap (z) between the grinding unit and the edges of the tables remains minimal. Such an arrangement is obtained if the value one minus the cosine of half the maximum pivoting angle (y) multiplied by the direct distance (d) between the tables edges is divided by two and the cosine of half the maximum pivoting angle (y) and gives a result acceptable for practical use and compliance with the standards and safety specifications for the gap (z) between the table edges and the grinding unit.